#4173DD#4173DD

#4173DD is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.7% C 0.171 H 263.1°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#4173DD
RGB	rgb(65, 115, 221)
HSL	hsl(221, 70%, 56%)
HSV	hsv(221, 71%, 87%)
CMYK	cmyk(70.6%, 48%, 0%, 13.3%)
CIE-LAB	lab(50.22, 18.54, -59.14)
CIE-LCH	lch(50.22, 61.98, 287.41°)
OKLab	oklab(57.72% -0.0205 -0.1697)
OKLCH	oklch(57.72% 0.171 263.1)
XYZ	xyz(21.3572, 18.6035, 70.8579)
Luminance	0.1861 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4173DD #DDAB41

analogous

#41C1DD #4173DD #5D41DD

triadic

#4173DD #DD4173 #73DD41

tetradic

#4173DD #DD41C1 #DDAB41 #41DD5D

square

#4173DD #DD41C1 #DDAB41 #41DD5D

split-complementary

#4173DD #DD5D41 #C1DD41

monochromatic

#193D8B #2254BF #4173DD #7599E6 #A9BFF0

Accessibility & contrast

On white

4.45

#4173DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#4173DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4173DD

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4173DD	#FFFFFF	#000000	##000000
##4173DD	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#397FE1

Deuteranopia (green-blind)

#0771DB

Tritanopia (blue-blind)

#008C9D

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4173dd;
/* rgb */ color: rgb(65, 115, 221);
/* oklch */ color: oklch(57.7% 0.171 263.1);

Tailwind

colors: {
  custom: {
    50: '#889ae8',
    500: '#4173dd',
    950: '#000000',
  },
}

SCSS

$custom: #4173dd;
$custom-light: #889ae8;
$custom-dark: #000000;

JSON

{
  "hex": "#4173dd",
  "rgb": {
    "r": 65,
    "g": 115,
    "b": 221
  },
  "hsl": {
    "h": 220.769,
    "s": 69.643,
    "l": 56.078
  },
  "oklch": {
    "l": 0.57717,
    "c": 0.17092,
    "h": 263.1
  },
  "luminance": 0.18606
}

Semantic roles & 50–950 ramp

primary

#4173DD

secondary

#DDC89D

accent

#B43BEC

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4173DD

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →